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Subject:	Re: problem building with cmake under cygwin (need clang)
To:	cygwin AT cygwin DOT com
References:	<5796B2A7 DOT 8060002 AT molconn DOT com> <CAEhDDbBsAGK69QyXLzjQu3JQSjD-vje6bhkzJPRo+poRzmrt4Q AT mail DOT gmail DOT com> <57977D6D DOT 7050203 AT molconn DOT com> <a1fc6589-8803-0661-1afa-d29d782b55aa AT gmail DOT com> <CAEhDDbCcH=Dk=6LEKXbn5Ez-pJD-nBuJuSj0nYKp40+zNVRjzA AT mail DOT gmail DOT com>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<321cb4dd-4e13-b321-a21e-b7257c4787b5@gmail.com>
Date:	Wed, 27 Jul 2016 12:06:24 +0200
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On 27/07/2016 09:51, Csaba Raduly wrote:
> On Tue, Jul 26, 2016 at 6:06 PM, Marco Atzeri  wrote:
>>
>> Csaba was clear but it seems you are misunderstanding,
>> the call to cmake is
>>
>>        cmake [options] <path-to-source>
>
> No, not <path-to-source> but <path-to-CMakeLists.txt>
>
> For quickhull, CMakeLists.txt is in the root of the project, the
> sources are under the src directory.

Csaba,
you are 100 %right.
I just copied the cmake help

$ cmake --help |head -n 4
Usage

   cmake [options] <path-to-source>
   cmake [options] <path-to-existing-build>

where of course they consider CMakeLists.txt as part of the source
and placed in the tree root.

> Regardless of where the build is performed, the path in the cmake
> invocation must point to the root of the project. Copying
> CMakeLists.txt into ./src and pointing cmake to ./src is unlikely to
> work.
>
> All of this is moot because the author of quickhull littered
> CMakeLists.txt with clang-specific compiler switches. He made no
> attempt to cater for the world's most widely used C++ compiler (GCC).

I agree on that. He made the life hard for anyone to build his software.

>
> Csaba

Regards
Marco



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